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  • 2021 July 19 17:16

    "Ship Carbon Recycling Working Group" of Japan's Carbon Capture & Reuse Study Group confirms that carbon recycled methane can be recognized as zero emission ship fuel

    The "Ship Carbon Recycling Working Group(WG)" of Japan's Carbon Capture & Reuse (CCR) Study Group has confirmed that carbon recycled methane produced by methanation technology can be recognized as zero emission ship fuel, according to MOL's release. A technical paper describing the details of the calculation procedure and evaluation conducted by the WG has been published in the latest issue of the journal of Japan Institute of Marine Engineering.

    Carbon recycling, which is the process of capturing and reusing emitted CO2, is becoming increasingly important as one of the pathways to realize a carbon-neutral society.

    To explore the feasibility of the concept of utilizing methanation technology for zero-emission ship fuels, the WG was formed within Japan’s CCR Study Group, and started its activity in July 2020.

    Since it is a basic premise for the WG’s activity that carbon recycled methane can be recognized as zero-emission fuel, the WG firstly worked on the evaluation of its potential.

    While International Maritime Organization (IMO) has yet to develop the rules for calculating emissions from the onboard fuel combustion of carbon recycled methane (Tank to Propeller), the importance to be cognizant of CO2 emissions in the fuel supply process(Well to Tank) has been noted.

    The WG has assumed and evaluated the following four processes as the supply chain for carbon-recycled methane fuel: (1) CO2 separation and capture, (2) CO2 transportation, (3) methanation fuel synthesis, and (4) methanation fuel liquefaction. As a result, the CO2 emission per unit calorific value of carbon-recycled methane fuel by methanation was calculated as approximately 27-gCO2/MJ (regarded as Well to Propeller).

    This figure is comparable to other alternative fuel candidates generally recognized as zero-emission fuels, confirming that carbon-recycled methane can be recognized as zero emission ship fuel. In addition, further reduction to approximately 20-gCO2/MJ is expected by improving the efficiency of the separation and capture technology, and using electricity produced from renewable energy.

    In order to verify the feasibility of carbon recycled methane as a ship fuel, the WG will continue to work on issues such as CO2 transportation by large-scale liquified CO2 carrier vessels, supply of hydrogen from renewable energy, prevention of methane slip (Note 5), supply infrastructure of liquefied methanation fuel, and economic viability.

    Mitsui O.S.K. Lines, Ltd. has set a medium- to long-term target to achieve net zero emissions by 2050 in the "MOL Group Environmental Vision 2.1", and has implemented five initiatives to achieve this goal. The WG's confirmation that carbon recycled methane can be recognized as zero-emission ship fuel will contribute to the further promotion of the "adoption of clean alternative fuels" and the "expanding low-carbon and decarbonization projects through use of the MOL Group’s concentrated strengths" and will continue to work together with industry leaders to reduce GHG emissions.




2021 October 20

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2021 October 19

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14:30 Port of Rotterdam throughput rises substantially again in Q3 2021
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14:02 Ice restrictions in Port of Sabetta basin to be effective as of Oct 25
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09:46 Baltic Dry Index as of October 18
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2021 October 18

18:07 OneOcean Group brings voyage optimisation solutions to Marlink Partner Programme
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17:49 MOL tabletop drill prepares for serious marine accident
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